Typewriting-machine



J. A. B. SMITH.

- TYPEWRITING MACHINE.

APPLICATION FILED DEC. 11, 1918 Patented Dec 28,1920.

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J. B. SMITH.

TYPEWRITING MACHINE.

APPLICATION HLED DEC. 11, I918.

Patented Dec. 28, 1920.

A 3 SHEETS-SHEET 2 l. A. B. SMITH.

TYPEWRITING MACHINE.

APPLICATION FILED DEC. 11, 1918.

Patented Dec 28 1920.

3 SHEETSSHEET 3.

rates arena- JESSE A. B. SMITH, OF STAMFORD, CQNNECTICUT, ASSIGNOR T0 UNDERWOOD TYPE- WBITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

TYFEWEITING-MACHINE.

Application filed December 11, 1918.

platen is adapted to be lifted in the carriage to. enable a work-sheet web to be drawn substantially straight beneath the platen.

One object of having the platen thus liftable is to enable carbon sheets to be readjusted between the work-sheets without reinserting the carbon sheets, with the result that long webs of paper maybe readily used as work-sheets. For handling such webs, it is often convenient to have them in rolls. There is some difficulty in preserving the alinement of separate webs, and of insuring that, when drawn off from the rolls, the webs do not slip over each other or over the platen during the act of line-spacing.

This invention relates to an improvement in the means for producing a slack in the webs by unwinding the same from the rolls, preparatory to the line-feeding operations, so that the platen at each line-spacing operation will not have the burden of starting the supply roll or rolls into rotation.

To enable the more convenient handling of such webs and the preserving'of their alinement, I have found it advantageous to utilize 'the carbon-papercarriage of said lVernery and Smith patent lay providing thereon a clamp which is adapted to automatically grip and release the webs.

To enable a slack to be produced between the rolls and the platen after the webs are alincd at the printing point, an oscillation of the carbon-paper-carriage may cause the clamp to seize the webs 'andto then'hold them seized when the carbon-paper-carriage is drawn forward, but to release them during the backward movement of the carriage. This slack may be taken up during subse- Specification of Letters Patent.

Patentedifaec. 28, 1920 Serial No. 266,193.

quent line-spacing operations. The clamp may be also automatically released by d'raw-' ing forward upon the webs when seized by the hand.

To enable the mechanism to be used in connection with forms of varying lengths,

and on webs of various widths, the clamp or its controlling means or both may be adjustably mounted.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a perspective view of an Underwood fan-fold' machine of the type referred to, showing my invention as applied thereto.

Fig. 2 is a fragmentar perspective, showing the relationship of t e clamp to the web, and the carriage upon which it is mounted.

Fig. 3 is a perspective view of the clampcontrolling device. g I

Fig. 4: is a sectional side view, largely diagrammatic, showing the clamp effective with the platen thrown upward after writin a form.

Fig. 5 is a simllar view showing the ends of the webs gaged, the clamp ineffective, and

the carbon carriage started on its way rearwardly, so that it may again pick up the webs.

Fig. 6 is a fragmentary view showing the,

Fig. 10 is a view similar to Fig. 9, but

with the carbon carriage pushed rearwardly from the position seen in Fig. 9, thus bringing the slack adjacent the rolls so that it may be drawn upon smoothly durlng the subsequent line-spacing operations.

In the usual Underwood fan-fold typewriting machine'ofthe kind referred to above, types 1 on type-bars 2 print upon a worksheet 3 passed around the platen 4, said The platen 4 is adapted to be rotated-in either its normal position or in its'lifted position by means of the usual line-space handle 12, which, through the usual slide 13, is adapted to turn the ratchet wheel 14, said ratchet wheel being connected by the usual pinions 15 and 16 to the axle of the platen, there being an idle pinion (not shown). To enable the platen 4 to be swung up in its frame 5, the frame is provided with a handle 17 fast thereto, which is normally caught down by a springpressed latch 18 adapted to swing upon the body 19 ofthe carriage. When pressing rearwardlythe latch 18, the typist can draw on the handle 17 thereby swinging the swing frame 5 around the axle'20 to the Fig. 4 position. 'lVhen in this position, the webs 3,

8 and 9 may be seized by the fingers and.

drawn along and gaged against the usual adjustable end gage 21, said gage being mounted on an extension 22 of the front paper-table 23, said table being provided with the adjustable side gages 24;

With the webs and platen in-the Fig. 4 position, the typist maydraw the webs to the Fig. 5 position, in which they are gaged against the gage 21, and then the typist may push the usual carbon-paper-carriage 25 rearwardly by pressing upon ahandle 26, thus carrying rearwardly the carbon sheets 27 and 28, which are held to the usual clips 1 29 upon the carbon carriage between which the webs 8 and 9 are threaded.

The typist pushes the carbon carriage rearwardly in the manner described, sliding 1t upon the rails 30, which form an extension of the carriage frame 19, until the carbon carriage 25 carries the upper end 31 of a clamping bar 32 against the over-hanging stop arm 33 of an adjustable bracket 34. When the end 31 strikes the arm 33, the clamping-' bar 32 swings about its pivot 35, so that a horizontal clamping .arm 36 on the bar 32 will slide over the surface of the top web 9 and slip into'a depression 37 of a stiff spring clamping jaw 38, which is fast to the carbon-paper-carriage 25, thus seizing or pinching the webs between the arm 36 and the jaw 38. The spring 38, it will be noted, is parallel to. the rails 30 and is formed of a bent-over spring having a downwardly turned free end 38 to enable the roller 36 to ride up over it.

The pivot 35 is fast in an upper arm 39 the arm 36 and the jaw 38 by the swinging of the bar 32. The carbon-paper carriage is arrested almost immediately after the top 31 strikes the arm 33, because the swinging of the bar 32 around its pivot 35 carries a stoparm 45 thereon against the flat top 46 of the bracket arm 39, which serves to limit the throw of the clamp bar 32 and thus serves as a stop to arrest the carbon-paper carriage.

In order to be able to vary the position at which the carbon-paper carriage is thus arrested, the bracket 34 is provided with a clamp 46 having a finger-piece 47 which screws into a plate 48 loosely embracing the flange of the rail '30, the end of the fingerpiece itself bearing against a plate 49, which directly engages the flange. lVhen the clamp 36 has thus seized the webs 3, 8 and 9, the carbon-carriage is arrested. The typist may then throw the swing frame and platen 4 into the Fig. 9 position. With the parts in this position, the written-on form will stand at just the right position to be detached by drawing the web across the usual knife 62.

Then the typist may drawforwardly the carbon-paper carriage by means of the handle 26,'thereby drawing the webs forwardly since they are clamped to the carbon-paper carriage. This will create a slack 50 upon which the line-spacing operation of the platen will draw instead of drawing directly from the rolls 7 and 10. If desired, the typist may then move the carbon carriage 25 rearwardly, thus transferring the slack 50' in Fig. 4, to'the released position, seen in Fig. 5. In order to limit this throw,-the upper end 31 may be provided with a second stop" 53 which, whenfthe upper end 31 is swung rearwardly around its pivot 35, will strike against the rear end of the bracket arm 39, and thus prevent the clamping arm 36 from being'thrown farther from clamping position than the point seen in Fig. 5. This provision insures that the clamping arm 36 will always be near enough the aw 38 to seize the webs with a small movement relatively thereto, thus. practically eliminating any tendency of the clamping member 36 to cause? one web to slip upon the other.

It has been found sufficientto provide av single clamping arm 36 upon one side of the carbon-paper carriage, and the bracket 40,-

which formsv this member, may be substantially an extension of the edge gage 54, this volve freely on the arm. Thus the clamp comprises a spring jaw 38 and a roller jaw 36. The depression in the spring aw advantageously extends only a little beyond the' end of the roll 59, with the result that the edge of the spring 38 near the center is flat, and from a point nearer the roller 59, bends sharply down to form the depression 37 in which the roller iseats itself. Although this wrinkles the webs, it is found that the wrinkles are not sufficient to form permanent; creases.

It is found that the clamp 36,38 grips the webs with sufiicient firmness to permit the upper frame 60 of-the carbon-paper carriage to be liftedpff (Fig. 8) to carry the ends of the webs clear of the carriage, so that another set of webs may; be used with another upper frame 60 while preserving the threading and alinement of the carbon sheets. The structure which permits this removal of the upper frameis shown in application No. 175,996, filed June 21, 1917 (now Patent No. 1,358,033, dated November 9, 1920).

It is further found that the jaws 36 and 38, if substantially of the form shown in the drawings, will not cause carbon. paper interposed between the \vebsto smut when the jaws seize. This adapts the jaws to be used with other devices, and with webs which utilize carbon surfaces printed on the backs of the webs above. Some typists prefer tooperate the devices in a slightly different order, viz., when the parts are in'the Fig. 5 position, they push the carbon-paper carriage to the Fig. 7 position and then bring it forward againto the Fig. 5 position, thus creating the slack, so that if the platen is swung'back,-.the webs will immediately assume the Fig. 9 or 10 position.

The present device is especially adapted to be used in connection with devices for alining the webs preparatory to writing each form. The alining devices may take the form .of a pin 63 or pins, adapted to fit in previously punched openings in the webs. Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others. Having thus described my invention, I claim:.

i 1. In a typewriting machine, the combinationwith a revoluble platen about, which Webs are adapted to be passed, of a clamp adapted to catch said webs, a slide on which the clamp is mounted, and means for automatically making the clamp effective by movement of the slide to a predetermined position.

2. In a typewriting machine, the combination with a revoluble platen about which webs are adapted to be passed, ofv a clamp adapted to catch and'hold said webs, a4v slide on which the clamp is mounted, said clamp being adapted to be automatically released adapted to catch said webs, a slide on which the clamp is mounted, and means for automatically making the clamp effective by movement of the slide to a predetermined position, said clamp being adapted to be made ineffective by drawing on the webs to advance it.

4. In a typewriting machine, the combination with a revoluble platen to receive webs passed thereabout, of web-supply means, a clamp for gripping the webs, a slide on which said clamp is mounted, and means whereby the movement of said slide to the rear to a predetermined position will render said clamp effective, said clamp being effective upon forward movement of the slide to advance the webs therewith, and thereby create a slack in the webs between the websupply means and the platen.

5. In a typewriting machine, the combination with a traveling carriage and a platen revolubly mounted therein, of an extension on said carriage over which a web may be drawn and passed around the platen, a slide adapted to be rcciprocated on said extension, a web-gripping clamp connected with said slide to travel therewith, and means for automatically rendering said clamp effective to grip the web by movement ofv said slide to slide to its'limiting rearward position, said' clamp being effective when drawn forward to advance a web upon said extension to create a slack in the web between the roll and the platen.

7. In a typewriting machine, the combination with a rotative platen, of a clamp for seizing and holding webs fed to the platen, said clamp being mounted for forward and backward movement relative to the platen, and means whereby the clamp will be rendered effective to seize and hold the webs at the end of its backward movement, for thereby drawing the webs forward with the clamp, said clamp being adapted to be auto matically released upon backward movement v thereof relative to the webs held thereby.

8. In a typewriting machine, the combina tion with a revoluble platen, of means to feed a web to the platen, including a spring having a depression extending inwardly from one side and only partly across the spring, a pivoted arm adapted to swing across said depression, a roller journaled on the end of said arm to fit in the depression and form with the spring a pair of clamping jaws to hold a web, a stop for arresting said arm in its clamping position, a stop for arresting said arm when moved in one direction away from itsclamping position, a slide upon which said spring and arm are mounted, and a controlling arm against which the swinging arm is adapted to strike 'to make the clamp effective and to arres the slide. 9. In a typewriting machine, the combination witha traveling carriage and a revoluble platen therein, of an extensionon said carriage, a carbon-paper carriage slidable on said extension, a removable upper frame for said carbon-paper carriage, a clamp upon said frame adapted to grip webs therein, and

a predetermined position, to permit the upper frame and the webs associated therewith to be replaced by another upper frame andi the platen is adapted to be lifted, feed rolls against which the platen normally bears so that it will hold a web between the platen and the feed rolls, an end gage for gaging the end of a web passed around the platen when the platen is swung up, a roll for the.

Web from which it is drawn, a slide, a clamp upon said slide adapted to be automatically released upon backward movement thereof relative to a web held thereby, and means whereby the clamp will be rendered effective at the end of its backward movcment to permit the web to be drawn thereby from the roll to create'a slack between the roll and the platen.

11. In a typewriting machine, the combination with a revoluble platen and a slide, of a clamp adjustable upon said slide for delivering webs to the platen, and a bracket arm forming part of said clamp forming an ed e gage for the webs. 12. n a typewriting machine, the combination with a traveling carriage and a revoluble platen therein, of an extension on said carriage, a slide slidable on said'extension, a removable upper frame forming part of said slide, an edge gage adjustably mounted on said frame, and a clamp forming part of said edge gage adapted to seize a'web to deliver it by the slide to the platen.

13. In a typewriting machine, the combination with a revoluble platen, of a reciproeating slide for feeding a web to the platen, a spring upon said slide, an arm adapted to be swung against said sprlng to be held there and clamp the web between the arm and the spring, and an adjustable bracket adapted to swing said arm automatically to clamping position.

- 14. In a typewriting machine, the combination with a revoluble platen, of a reciprocating slidefor feeding a web to the platen, a spring 'upon said slide, an arm adapted to be swung against said spring to be held there and clamp the web between the arm and the spring, and an adjustable bracket adapted to swing said arm automatically to clamping position, said arm adapted to be swung to releasing position by drawing upon the web. J

15. In a typewriting machine, the combination with a spring having a depression extending inwardly from one side and only partly across the spring, of a pivoted arm adapted to swing across said depression, a roller journaled on the end of said arm to means for making said clamp effective by fit in the depression and form with the movement of the carbon-paper carriage to spring a pair of clamping jaws to hold a web, a stop for arresting said arm in its clamping position, a stop for arresting said arm when moved in one direction away from its clamping position, and an adjustable bracket adapted to strike said pivoted arm to make the clamp effective.

16. In a typewriting machine, the combieeaeea nation with a revoluble platen about which webs are adapted to be passed, of a clamp adapted to catch said webs, a slide on which the clamp is mounted, and a, bracket adjustably mounted for making the clamp efi'ective by arresting the slide.

17. In atypewriting machine, the combination with a revoluble platen aboutwhich webs are adapted to be passed, of a clamp for gripping the webs behind the platen, said clamp adapted to bend the paper forming the webs to obtain, without excessive pressure, an effective grip thereon to prevent relative slipping.

18. In a typewriting machine, the combination with a. revoluble platen, of a clamp for holding webs behind the platen and forming a gage for the webs, so that the clamp prevents relative movement thereof, and a slide upon which said clamp is mounted. i

19. In a typewriting machine, the combination with a revoluble platen, of a clamp for holding webs behind the platen and forming a gage for the webs, so that the clamp prevents relative movement thereof, a slide upon which said clamp is mounted, and connections whereby the clamp is automatically made effective and inefiective.

20. In a typewriting machine, the combi nation with a traveling carriage and a revoluble platen, of a frame in which said platen is adapted to be lifted to permit webs to be drawn horizontally therebeneath, a gaging device for alining the webs relatively to each other, a slide, and a clamp upon said slide adapted to be automatically made effective atthe end of the rearward movement of sai slide.

21. In a typewriting machine, the combination with a traveling carriage and a revoluble platen, of a frame in which said platen is adapted to be lifted to permit webs to be drawn horizontally therebeneath, a gaging device for alining the webs relatively to each other, a slide, a clamp upon said slide,

and means to render said clamp effective at the end of the rearward movement of said slide, said clamp being adapted to be made ineffective by forward drawing on the webs relatively to the slide. I

22. In a typewriting machine, the combination with a traveling carriage and a revoluble platen, of a frame in which said platen is adapted to be lifted to permit webs to be drawn horizontally therebeneath, a gaging device for alining the webs relatively to each other, a slide, a clamp upon said slide adapted to be automatically made effective at the end of the rearward movement of said slide, rails behind the platen upon which said slide runs, and an adjustable bracket fixed relatively to the rails to determine when the clamp shall become effective.

28. In a typewriting machine, the combination with a traveling carriage and a revo luble platen, of a frame in which said platen is adapted to be lifted to permit webs to be drawn horizontally therebeneath, a gaging device for alining the webs relatively to each other, a slide, a clamp upon said slide adapted to be automatically made effective at the end of the rearward movement of said slide, connections whereby the clamp is automatically made ineffective by drawing .on the webs relatively to the slide, rails behind the platen upon which said slide runs, and an adjustable bracket fixed relatively to the rails to determine when the clamp shall become effective.

24. In a typewriting machine, the combination with a traveling carriage and a revoluble platen, of a frame in which said platen is adapted to be lifted to permit webs to be drawn horizontally therebeneath, a gaging device for alining the Webs relatively to each other, a slide, a clamp upon said slide adapted to be automatically made effective at the end of the rearward movement of said slide, rails behind the platen upon which said slide runs, an adjustable bracket fixed relativel to the rails to determine when the 25. In a typewriting machine, the combination with a traveling carriage and a revoluble platen, of a frame in which said platen is adapted to be lifted to permit webs to be drawn horizontally therebeneath, a gaging device for alining the webs relatively to each other, a slide, a clamp upon said slide adapted to be automatically made efi'ective at the end of the rearward movement of said slide, connections whereby the clamp is automatically'made ineffective by drawing on the webs relatively to the slide, rails behind the platen upon which said slide runs, an adjustable bracket fixed relatively to the rails to determine when the clamp shall become effective, and an edge gage adjustably mounted on said slide forming the mounting for the clamp.

26. In a typewriting machine, the combination with a traveling carriage and a platen revolubly mounted therein, of a roll from which a web is adapted to be drawn to be fed to the platen, a slide between the roll and the platen, a clamp mounted upon said slide to be reciprocated therewith, said clamp being adapted to be automatically released upon backward movement thereof relative to a web held thereby, and means whereby the clamp will be rendered effective at the end of its backward movement, so that a reciprocation of the slide will automatically create a slack inthe web between the roll.

nation with a traveling carriage and a laten revolubly mounted therein, ofa web-supply from which webs may be drawn to be fed to the platen, a slide between the web-supply and the platen, a clamp mounted upon said slide to be reciprocated therewith, said clamp being adapted to be automatically released upon rearward movement thereof relative to webs held thereby, means to render said clamp effective at the end of its rearward movement, so that a reciprocation thereof will automatically create a slack be. tween the web-supply and the platen, and an alining device for alining the webs relatively to each other.

28. In a typewriting machine, the combination with a bent-over fiat spring having a depression extending part way across, of an'upright adjacent said spring, an arm pivoted on said upright to swing across the depression and lengthwise of the spring, and a clamping arm extending from said pivoted arm adapted to seat itself in said depression to clamp work-sheets against the depression. a v

29. In a typewriting machine, the combination with a bent-over fiat spring having a depression extending part way across, of

an upright'adjacent said spring, an arm pivoted on said upright to swing across the depression and lengthwise of the spring, and a clamping arm having a-roller journaled thereon extending from said pivoted arm adapted to seat itself in said depression to clamp work-sheets against the depression,

30. In a typewriting machine, the combination with a traveling carriage and a revoluble platen therein, of a carbon-paper carriage forming a slide, adjustable edge gages upon said slide, and a clamp upon one of said edge gages adapted to seize one edge of a plurality of sheets passing between said gages.

31. In a typewriting machine, the combination with a traveling carriage and a revoluble platen therein, of a carbon-paper carriage forming a slide, adjustable edge gages upon said slide, a clamp upon one of said edge gages adapted to seize one edge of a plurality of sheets passing between said gages, an adjustable bracket, and an arm forming part of said clamp to control the effectiveness thereof and adapted to strike said bracket to arrest the slide.

32. In a typewriting machine, the combination with a traveling carriage and a revoluble platen, of a slide over which webs pass to said platen, a clamp mounted upon said slide adapted to seize the webs, said clamp adapted to release the webs when the webs are drawn upon, an upstanding arm forming part of the clamp, a rail upon which the slide runs, and an adjustable bracket comprising an arm extending horizontally to intercept said bracket arm to make the clamp efiective and to arrest the slide,

33. In a typewriting machine, the combination with a traveling carriage and a revoluble platen, of a carbon-paper carriage slidable upon the typewriter carriage and adapted to have carbon sheets made fast thereto, so that the carbon sheets may be interleaved between webs, a clamp for clamping the webs to the carbon-paper carriage to preserve the relationship between the carbon sheets and the webs, and means whereby movement of said carbon-paper carriage to a predetermined position will render said Clamp effective.

34. In a typewriting machine, the combination with a traveling carriage and a revoluble platen, of a carbon-paper carriage slidable upon the typewriter carriage and adapted to have carbon sheets made fast thereto, so that the carbon sheets may be interleaved between webs, a clamp for automatically clamping the carbon carriage to the webs to preserve the relationship between the carbon sheets and the web's, rolls from which said webs are drawn, and a handle for oscillating said carbon-paper carriage to create a slack in the webs between the rolls and the platen.

35. In a typewriting machine, the combination with a traveling carriage and a revoluble platen, of a carbon-paper carriage slidable upon the typewriter carriage and adapted to have carbon sheets made fast thereto, so that the carbon sheets may be interleaved between webs, and a clamp for automatically clamping the carbon carriage to the webs to preserve the relationship between the carbon sheets and the webs, said carbon-paper carriage having a removable topvupon which the carbon sheets and clamp are mounted to permit another removable top having other webs clamped thereon to be substituted therefor. I

36. In a typewriting machine, the combination with a traveling carriage and a revoluble platen, of a carbon-paper carriage slidable upon the typewriter carriage and adapted to have carbon sheets made fast thereto, so that the carbon sheets may be interleaved between webs, a clamp for automatically clamping the carbon carriage to the webs to preserve the relationship between the carbon sheets and the webs, rolls from which said webs are drawn, and a handle for oscillating said carbon-paper carriage to create a slack in the web between the rolls and the platen, said carbon-paper carriage having a removable top upon which the carbon sheets are mounted to permit another removable top having other webs clamped thereon to be substituted therefor.

37. In a typewriting machine, thecombination with a traveling carriage and a revoluble platen, of a frame in which said platen is adapted to be lifted to permit webs I to be drawn horizontally therebeneath, a

gaging device for alining the webs relatively to each other, a slide, and a clamp upon said slide adapted to be automatically made efi'ective at the end of the movement of said slide. w 38. In a typewriting machine, the combination with a traveling carriage and .a revoluble platen therein, of a carbon-paper carriage forming a slide, adjustable edge gages upon said slide, a clamp upon one of said edge gages adapted to seizeone edge of a plurality of sheets passing between saidgages, an adjustable bracket, and an arm forming part of said clamp to control the efiectiveness thereof and adapted to strike said bracket.

39. In a typewritin machine, the combination with a trave ing carriage and a revoluble platen, of a slide over which webs pass to said platen, a clamp mounted upon said slide adapted to seize the Webs, said clamp adapted to release the webs when the Webs are drawn upon, an upstanding arm forming part of the clamp, a rail .upon which the slide runs, and an adjustable bracket comprising an arm extending horizontally to intercept said bracket arm to make the clamp effective.

JESSE A. B. SMITH.

Witnesses:

CATHERINE A. NEWELL,

JENNIE P. 'lHonNE. 

